Manual

Layer 2 Tunnel Protocol Version 3
Information About Layer 2 Tunnel Protocol Version 3
18
Cisco IOS Releases 12.0(29)S and 12.2(25)S
L2TPv3 and UTI Feature Comparison
Table 1 compares L2TPv3 and UTI support for the Cisco 7200 and Cisco 7500 series routers.
Table 1 Comparison of L2TPv3 and UTI Support
Feature L2TPv3 UTI
Maximum number of sessions Cisco 7200 and Cisco 7500 series:3000 Cisco 7200 and Cisco 7500 series: 1000
Tunnel cookie length 0-, 4-, or 8-byte cookies are supported for
the Cisco 7200 series and the Cisco 7500
series routers.
8 bytes
Static sessions Supported in Release 12.0(21)S. Supported
Dynamic sessions Supported in Release 12.0(23)S. Not supported
Static ToS Supported in Release 12.0(23)S. Supported
MQC ToS Supported in Release 12.0(27)S. Supported
Inner IP ToS mapping Supported on the Cisco 7200 series
routers and Cisco 7500 series routers.
Not supported
802.1p mapping Not supported. Not supported
Keepalive Supported in Release 12.0(23)S. Not supported
Path MTU discovery Supported on the Cisco 7200 series and
Cisco 7500 series routers.
Not supported
ICMP unreachable Supported on the Cisco 7200 series and
Cisco 7500 series routers.
Not supported
VLAN rewrite Supported on the Cisco 7200 series and
Cisco 7500 series routers in
Release 12.0(23)S.
Supported
VLAN and non-VLAN translation To be supported in a future release. Not supported
Port trunking Supported in Release 12.0(23)S. Supported
IS-IS packet fragmentation through
an L2TPv3 session
Supported on the Cisco 7200 series and
Cisco 7500 series routers.
Not supported
IP packet fragmentation through an
L2TPv3 session
Supported on the Cisco 7200 series and
Cisco 7500 series routers in
Release 12.0(24)S.
Not supported
Payload sequence number checking Supported on the Cisco 7500 series in
Release 12.0(28)S.
Not supported
MIB support VPDN MIB for the pseudowire
IfTable MIB for the attachment circuit.
IfTable MIB for the session interface.